Bolt anchor



BOLT ANCHOR Filed July 22. 1921 2 Sheets-'Sheet 2 Jig/ Wg/Z,

nvemtoz 7040/2 Z7. 030271 Zar/f5 C 75m/anaal?.

5 to direet Patented Nov. 8, 15327.

UNITED STTS TENT FFCE.

RALPH EDWARD OGDEN, OF MOUNTANVILLE, NEVI YORK, AND CHARLES C. TOMKIN- SON, OF PLAINFIELD, NEW' JERSEY, ASSIGNORS 'TO JOHN EDVARD OGDEN, OF

MOUNTAINVILLE, NE'W YORK.

BOLT ANCHOR.

Application filed July 22, 1921.

This invention relates to improvements in bolt anchors ot the eharaeter employed for obtaininganchorage in walls ot brifl; or stone or eenientitioue niateral, niet adapted ly receive a threaded bolt.

@ne ot the objects ot this invention is to provide a Shield that may he deep in the Wall and need not extend to the enter end et the opening in the Wall in order to be prepn l erly and firmly anchored therein.

Another object ot the invention is to provide a ehie`d so Constructed to torni an abutment tor the belt upon the initial rotation of the bolt vvhereb)1 the nut Carried by the bolt will be Yted along` the bolt.

Another object ot the invention vide an eipaneion shield and ev anV i means for the shield that is ain'iple in 'in struction, ettieient in ope tion and ma. eeononiiealliv inann'taetnred.

Another olijeet ot the inventien ifi to provide a new and etlieetive method of expand ing an expansion shield.

Further objects oi" the invention Will appear troni the followingp si'reitieation alien in eonneetion With the drawing@ which form a part et the application.

The above objects are attained in the enibedinxent of the invention illnxtrated by a Shield Comprising a plnralit)v ot parte; or seetions i'ne'terabllv et sheet metal or ot uniform thieknees. the Shield having' fingere or tines bent inwardly toward or approxiniatelv to the longitudinal axis thereet. The fingers are adapted te be enlffaeged bv a bolt or threaded ineniber upon the initial rotation. thereof. thereby eaneinff the niet eariied bv the bilr to travel alone' the latter and foi-ee the fingere ontvvardlv er laterallv into en :y'ae'ement with th .vall et the openina in which the Shield ie positioned.

Reterring to the dravvinl '7: lia'. 1 ia a Seetional elevation et a ooi-tion ot a wall having a bolt anchor. eonetrneled in accordance with the invention. poeitioned therein. the expansion shield being expanded into ivall engaging position.

Fig. 2 is a sectional elevation of the belt anchor before the expansion ot the shield.

Fie?. 3 is an elevational vienv of the eX- pansion shield.

Fig. 4 is an end elevation of the inner end of the shield.

Y be

Serial No. 486,742.

Fig. 5 ie an end elevation ot the opposite end ot the shield.

Figa. (3, 7 and 8 are transverse Sectional views taken enbstantiall)1 on lines 5 6, 7 7 and SiS reispeetively ot Fig'. 2.

Fig'. a perspective view of the nut for exiarnling the shield.

Fia'. 10 is an elevation et a single piece, .Li-heet metal shield Constructed in aeeordance n; h in v invention.

Fig'. 11 an end elevation of the inner or bottoni end ot the shield shown in Fig. 10.

Figi'. 12 an end elevation of the other ad ot the shield C.hoivn in Fig. 10.

Figi. 13 ia a plan vieiv ot the blank from Fie". 17 ia a plan View ot the blanl: .foin vfhieh the Shield Shown in Figi: 14 is maffe.

rl ie expaneion shield Shown in Figa. 1-53 ino ive. wmprie-ea a Shell divided longitndinallv thronghont its length "forming wjrf'tie'fis: 1li and 11. rl`he seetiona are held tofetlier bv a split ring` 13 i'ioeitiined in Weave; 1'1- termed in the seetione ot the nell. in slhozvn in Fine. 1 and the Shell i termed ot Sheet metal stainpinxs and the te matien et the eroovee iirovidee .enpoortins; @urtareq 15 for the bolt 1G. rl`he rooves 14 also torni an internal Shoulder or ridge nheh art?. as a Stop to lilnit the movement ot' tlfe nn Faeh ot the ahell is: Slotted lonsfitndinallv sfheivn at 1T and the metal at the edge@4 of' t ie @eta adjaeent the inne*1 ende ot' the See- .fvee tineferC beine tan-ered ae Slimvn at 19 ani eleo heine' tapered at their extreme ends Fhoxvn at Q0. The ende oi' the tin-eers or tinee are bent invardlv shown at Q1 in a direeton tov'ard the loneitndinal avis ot the ehie`d and in the embodiment ot the invention illnetrated the iinfers eatend Substantiallv 'to the avis ot the shield The nut which adanted to receive a bolt 1G and to expand the shield into engagement 'with the Wall et the opening mayV be made from a sanare bar on an automatic screw machine. This nut has a plurality of flat faces 23 at ene end nnd these laeee inay intersect nt n eliarp angle or the corners nniy be ent eli" ne .einown :it 24. The nut 22, as shown in Fien. l, Q, l :ind 9, is a composite ol prieinatie and eonieal enrlaeee. lfhe conical eurtaeer; are dispofed between the flat irisinatie fzieeff and taper freni the corners 24 to the reduced rrlindrienl portien 23. The llat faces et' the init nierg'e into a Circuler portion at the oppof'fite end nl the nul; the diameter ot this rir-enlnr portion approximately eqnaling the inner diameter of the expansion ehield. YWhen the nut plneed in the r-:hield tho eernersy extend 'nte the eut away portions letvceen lli-'f iin'ei' in: rln'ini. in lfij. The i Y ill ol the linger# retain the urnezl een l1 fe'fl.

mit in tbe 'l'he hiel-Cl shown in Fine. ll) Vvl influe-ire in linielieil tnrin to that above deis .eilniln weribed but in thin n ateneo the eliiel'rl ii;

eet nietnl et in the other einbeninienl'. The folded upon itself an l the side eligen are beni laterally until thejY ineet. The lingen; 'l5

are bent inwardly toward tl: axle fn in Figs, l and ll 2l. An opening Sl lor receiving` the bolt may be pilnelied in the blank belore bending or may be punched alter the blanl; has been folded to Jtorni the shield.

ln Figs. lin-l another Sinfile pieee, Sheet metal Shield ifs si wn. ln this torni, the central part 82 e redueed in size and in l i apertured. Fingers are iorlned as bel'ore and the blank is folded about ite; Central portion and the edges are 'folded in to niels the shield .shown in Fig. lll.

The bolt anchor above demeribr'; '-5 operated in the following nianner. willie-n objeet` QG is to be eQured to a well 2T bolt 1G is passed through an openine in the object 2G and in threaded ii nut 22 which with the expansion .3 .i been inserted in an opening in the wall Upon the initial rotation of the o end of the bolt will prese against the 1lent. ends 2l of the lingers or tinee. The ting.. thus forni an ebutnient for the bolt and rent longitudinal niovennent llereol. the nut is rolnted, tlierel'ore the nut Ei travel :dong ille bolt if expand llin :in-rho sind the lingers l Will be pressed outwardly also by the Sider; el" the belt into lirni nini eeeure engagement wiih the will oV the opruing. The tepel-eil lingers nre forced ousnnrdly between the faces ot the nnt and lle bore of the opening. 'lf'he nut laces thn1 forni Chords in the eii'euinseribing 'circle lorined by the bore. The corners ot' the nut are forced into the eylindrenl iz rior portion of the shield, lhereb)v loreing` this portion outwardly as shown in Fig. l. It Will thus be seen that the shield may be leeplj/ embedded in the opening in the wall and need not extend to the outer end ol the opening or into engagement with the bar 2G in order to prevent the initial longitudinal movement of the bolt. When the hend ot the bolt engages the object 25 the nut will be further drawn along the bolt, further increasing the lirinneee of the anchorage, the parts taking approximately the position indicated in Fig. l.

Although one speeilie einlmdlnient of the invention has been particularly illustrated and described, it will be understood that the invention is Capable ol inmliliention und that changes in the construction :ind in the arrangement ol the various eoopernting` part:u lnay be iliade without departing Vlroni the :pirit or scope of the inrention as expressed in the lfellowin` elainre.

1Vilhat we elniin is:

l. ln combination, a shield having n enbstantially cylindrical inner surface and a p elit.'A ol' longitnidinnll5v extending lingers with the ende: thereof bent inwardl,7 torcer-d n lian led portion7 zulapted lo bolt and to expand said linflers.

2. In combination, a Shielo haring :i y stantinlly Cylindrical inner surface plur lily ot lon l i illy extending; livin with the end:y thereof b nt invxzn'dl;Y tofnrd the axis of tie shield, and e. nut belwer-n Said lingers, having' a eirenlr portion Y its diameter eubtnntielly eq i to the in, diameter of the ehieid :ind n p: tion, ndap'ted to engage a bolt aid lngere.

il. In eonxbinetion, a shield haring zt rality of longitudinal slots leuning :1, ity ot' traneVerselj-,f tapered lingers. forni tllielrnesz; throughout their le ends ol' the lingers beine; bent inw; wif-.rd the unie el the shield, and :i tween izaid linvern adapter' to engi; and to expan liin e. ln eoin etantiall'iv @line rality ol longitu with the end4 thereot bent inwn i the :ii-in ot the sli: id, and a n said lingerfi, having plur: lily o nzergiin into :z eireulsr end portie :if lo enI/ree a boit :ind lo expand mid Si. ln Ninibinnli': l :l :hield having; :i enh" 13" lnntinlly eylinllriral inner Surface nd a pl; rnltf; of inn a i dw 1 n plurality of eeparaled lingjcre and a net between said lingers haring'- a circulan portion and a pluralitv ot llat intereeting faces l2 forming' corner/:5` extending into the slots.

(i. In Combination, a shield having a substantially cylindrical inner surface and a plurality of longitudinal slots forming a plurality of separated fingers, and a nut between said fingers having a circular portion and a plurality of flat intersecting faces forming corners extending into the slots and substantially to the outer circumference of the shield.

7. In combination, a shield of uniform thickness having a plurality of longitudinal slots forming a plurality of separated fingers, the ends of the fingers being bent inwardly, and a nut between said fingers having a plurality of flat intersecting faces forming corners extending into the slots.

8. In conibination, a shield having a plurality of longitudinally extending, tapered fingers of uniform thickness and having a cylindrical inner surface and a nut having surfaces engaging said fingers and having corners adapted to engage and expand the cylindrical surface of the shield.

9. In combination, a shield having a plurality of longitudinally extending, tapered ngers of uniform thickness and having a cylindrical inner surface, and a nut having surfaces engaging said fingers and having corners extending between said lingers, said nut being adapted to engage and expand the cylindrical surface of the shield.

10. In combination, a shield having a substantially circular inner surface and a plurality of longitudinal slots forming a plurality of separated fingers, and a nut between said lingers having a circular portion and a plurality of flat intersecting` faces forming corners extending into the slots.

11. In combination. a shield having a substa-.ntialliv circular inner surface and a plurality of' longitudinal slots forming a plurality of separated fingers, and a nut between said lin;y having a circular portion and a plurality of' flat intersecting faces forming corners extending into the slots and substantially to the outer circumference of the shield.

12. A nut for expanding an expansion shield having flat surfaces extending substantially throughout the length of the nut and having surfaces extending substantially throughout the length of the nut and tapering from the flat surfaces to a circle.

13. A nut for expanding an expansion shield having a circular portion at one end and a flat sided portion at the other end and a tapered connecting portion extending substantially throughout the length of the nut.

14C. In combination, a shield having expansible portions, and an expanding element therein, having tapered portions engageable with the shield, the expansible portions of the shield engageable by said element being disposed in a cylindrical surface coaxial with the axis of the shield.

15. In combination, an expansion shield having longitudinally tapered fingers of uniform thickness and an expanding element having flat sides parallel to the axis of the shield and engageable with said fingers.

16. In combination, an expansion shield having a substantially cylindrical interior surface and a nut having a square end and tapered corners engageable with the cylindrical inner surface of the shield.

17. In combination, an expansion shield formed from metal of uniform thickness and having cylindrical interior portions and a nut having a polygonal end and having tapered corners engageable with the cylindrical interior portions of the shield.

18. An expansion shield having a plurality of expansible portions, a nut within said shield adapted totravel lengthwise therein and expand said portions, an internal stop shoulder in the shield engageable by the nut, and means on the outer surface of the shield adjacent the internal shoulder forming an excess of metal thereon.

19. In combination, a shield having a plurality of longitudinal slots forming a plurality of transversely tapered fingers of uniform thickness throughout their length. at least one of said fingers having its end bent inwardly toward the axis of the shield, and a nut between said fingers adapted to engage a bolt and to expand said fingers.

20. In combination, a shield having a plurality of longitudinally extending taper-ed 'i fingers of uniform thickness, and an expanding member having flat faces parallel to the axis of the shield and engaging said fingers andv adapted to force said fingers outwardly by the lateral wedging action of the flat faces on the tapered fingers.

21, In combination, an expansion shield having an internal ridge therein, reinforcing metal on the outer surface of the shield disposed in the plane of said ridge, and an expanding member in said shield, said ridge forming a stop for limiting the longitudinal movement of the expanding member in the shield.

22. In combination, an expansion shield comprising a substantially cylindrical tubular member 0f uniform thickness having longitudinally extending tapered portions, and an expanding member having flat surfaces substantially parallel to the shield axis and engageable with the edges of said tapered portions, and adapted to force said portions outwardly by a lateral wedging action.

In witness whereof, I have hereunto set my hand this 18th day of July, 1921.

RALPH EDVARD OGDIIN.

In Witness whereof. I have hereunto set my hand this 18th day of July, 1921.

CHARLES C. TOMKIN SON. 

